Molding-machine.



D. M. DEAN.

MOLDING MACHINE.

APPLICATION FILED JUNE 9.1911.

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D. M. DEAN.

MOLDING MACHINE.

APPLICATION FILED JUNEQ, I911 1,181,211. Pat d May2, 1916.

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D. M. DEAN.

MOLDWG MACHINE. APPLICATION FILED JUNE 9. 1911.

Patented May 2,1916.

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a a l DOLIVER M. DEAN, OF LACON, ILLINOIS.

MOLDING-MACHINE.

Specification of Letters Patent.

Patented May 2, 1916.

Application filed June 9, 1911. Serial No. 632,263.

To all whom it may concern Be it known that I, DOLIVER M. DEAN, acitizen. of the United States, residing at Lacon, in the county ofMarshall and State of Illinois. have invented certain new and usefulImprovements in lVIolding-I Iachines, of which the following is aspecification.

This invention relates to machines for making or molding articles ofplastic materials, and is especially designed for the manufacture offence posts and similar articles from concrete or other plasticsubstances.

The principal object of this invention is to provide a simple and novelmachine of the above character whereby fence posts may be manufacturedrapidly and inexpensively without the production therein of blow holesor other defects.

A further object of this invention is to provide a machine of largecapacity, that is which will turn out a number of articles in a shortperiod of time and with a minimum expenditure of power and labor.

T o the accomplishment of the foregoing and such other objects as mayhereinafter appear, my invention'consists in the construction andarrangement of parts hereinafter particularly described and then soughtto be defined by the appended claims.

An embodiment of the invention that is considered preferable isillustrated in the accompanying; drawings and described in the followingspecification, but it is to be the 1 practical construction and detailsof the device Wlillh in the scope of the appended claims withoutdigressing from my inventive idea which is defined therein.

In the drawings, Figure 1 is a bottom plan view of the top mold carryingplate. Fig. 2 is a top plan view of the bottom mold carrying plate. Fig.3 is a top plan view of the supportive frame work of the ma- Fig. ti: isa vertical section of-the assembled machine taken on the plane passingthrough the line l& of Fig. 2. Fig. 5 is atop plan view of a mold. Fig.6 is a side elevation of a mold. Fig. '7 is a horizontal cross sectionof the mold taken substantially on line 7-7 of Fig. 6. Fig. 8 is avertical cross section of the mold locking 'cap. Fig. 9 is a perspectiveview of the assembled machine, only a few of the molds and securing cupstherefor being shown.

the drawings similar characters, 9f 1'65 erence designate correspondingparts in all the figures of the drawings.

The invention provides a top and a bottom mold carrying plate which arespaced apart by tie rods and sleeves and which are provided with moldholding cups or flanges in which are held the molds. There are twoseries of molds running entirely around the machine which is circular inform. An automatic tamping means is provided to securely tamp or rathershake the material into a compact form. The molds are formed in twosections and hinged in a new and novel manner and are also securedbetween the mold carrying plates by means of a novel locking cap. Themachine is driven continuously by a power connection with the lowerplate.

In carrying out the invention, I provide a supporting frame orfoundation A which is composed of a central plate B, having a verticallyextending stud shaft C. Secured to this plate B bv means of tie rods Dare plates E and E which are connected together by tie rods F. Theseplates E and E are provided with yokes G in which are journaled rollersII. Formed on the end of the plate E is the boss or projection I, inwhich is mounted the driving shaft J. Keyed on this shaft J is thedriving pinion K.

The machine as stated hereinbefore, comprises the top and bottom moldcarrying plates between which the molds are held and carried. The lowerplate designated by the numeral 1 is mounted for rotation on the shaft Cand is provided on its outer periphery with the gear teeth 2 which meshwith the teeth of the pinion K. On the bottom of the plate 1 areprovided the inclines 3 which terminate in the abrupt vertical shoulders4:. In the drawings, four of these inclines are indicated but theirnumber may be changed as desired. These inclines. together with therollers I'I form the means whereby the material is tamped in the moldswhen the machine is in operation as in the rotation of the machine theinclines will run upon the rollers and thus raise the machine and whenthe vertical shoulders 4r. are reached by the rollers the machine willdrop abruptly, jogging or tamping the material in the molds compactlyand thus eliminating blow holes and other defects.

The lower plate 1. is provided on its upper surface with two circularseries of cups or ring shaped flanges 5 which are preferably arranged instaggered relation as shown. The upper or top plate 6 is provided withtwo corresponding series of cups or flanges 7 which are located on theunder side thereof and are preferably somewhat smaller in diameter thanthe cups on the lower or bottom plate 1. The top plate 6 is furtherprovided with openings 8 in line with the cups or ring shaped flanges 7.As is evident from an inspection of the drawings, the lower plate isformed solidly and is provided with a plurality of openings,preferablyfour, to correspond with the flanges or lugs 10 which extend from theinner periphery of the upper mold carrying plate 6 which as shown is inthe form of a circular ring. Passing through holes in these lugs 10 andalso through the holes 9 in the lower plate are tie rods or bolts 11 onwhich are placed the spacing sleeves 12 which hold the top and bottomplates the proper distance apart. The molds 13 are held in positionbetween the top and bottom plates by means of the cups or ring shapedflanges formed on the surfaces thereof. The said molds are preferablytapered, being wider at the base than at the top and are formed of twosections 14, see Fig. 7, each having end portions provided with ashoulder 15 and an over-lapping projection or flap 16. These sectionsare provided with a hinge of peculiar construction whereby they may beopened from either side. The hinge is formed in the following manner:Secured to the sides of each section are the angle iron members 17 whichare positioned preferably on an incline, see Fig. 6 particularly, andprovided with lugs or projections 18. The angle iron members are soarranged on each section that when the two sections of the mold areplaced in an assembled position the openings in the lugs 18 register.Through. these openings are passed the pins 19. It is to be noted thatthese hinges are formed at both the meeting edges of both the sectionsand, therefore, by removal of one pin the mold utilizing the other pm asthe pivotal connection for the hinge. It is obvious that I have provideda simple and convenient hinge construction whereby the mold may beopened from either side.

Secured to the top of each mold section is the pin 20 which is adaptedto engage in the inclined grooves 21 which are formed in the moldlocking and securing cap 22. This cap is designed to be placedupon theupper end of the mold and rotated so that it is drawn down and then themold is placed in position in the bottom cups or ring shaped flanges 5and brought into register with the top cups or ring shaped flanges 7 Thelocking cap 22 is then rotated in a direction opposite to its firstrotation when maybe opened at that side 1 by reason of the engagement"of the'pins with the inclined slots or grooves 21, it will be forcedupwardly into engagement with the cups or ring shaped flanges on theunder side of the top plate and thus securely lock and hold the mold inposition. It is obvious that by reversing this series ofxoperations themoldsmay be unlocked from position and opened to allow the removal ofthe completed article.

The operation of the machine is very simple and readily understood. Theplastic materlal is supplied from ahopper 23 or other means indicated indotted lines in Fig. 9, the machine being driven continuously by meansof the driving connection shown and described. A scraping means 24: asindicated in dotted lines in Fig. 9 is provided to remove the surplusmaterial. During the entire time that the material is being supplied tothe machine the machine will be alternately lifted and dropped suddenlyby means of the incline 3 and shoulders 4 engaging with the rollers H,thus tamping and jogging the material compactly in the molds,eliminating any defects. This operation is continued until the molds arecompletely filled with thoroughly compacted material. The molds are thenremoved from the machine after the cap 22 is lowered by rotation and aretransported away to be allowed to dry and set, a plate 25 beingprovided. in the bottom of each mold to prevent the escape of thematerial during the mold. New molds may be then placed in position andthe operation resumed.

I have shown and illustrated a device or machine wherein a large numberof articles may be manufactured at once and have indicated places atwhich forty-two molds may be placedv so that forty-two posts may bemanufactured at the same time. It is obvious that I may increase ordecrease the number but. it is to be understoodthat my machine isdesigned particularly to, havev a large capacity and to operate up toits full capacity with minimum. expenditure of power and labor. I havealso provided. a new and improved hinge construction whereby the moldsmay be opened from either side, and I have also provided a new lockingmeans whereby the molds may be secured positively and accurately inposition.

The machine is composed of a very few simple parts, readily assembledand taken apart and is not liable to get out of order. If it does,however, it may be readily repaired owing to the simplicity of itsconstruction.

What I claim is 1. The combination with a supporting frame, of aplurality of mold carrying plates rotatably mounted thereon, a pluralityof molds mounted between said plates, means handling of the forreciprocating said plates and molds, and means for rotating said platesand molds.

2. The combination with a supporting frame, of a plurality of moldcarrying plates rotatably mounted thereon, a plurality of molds mountedbetween said plates, means for reciprocating said plates and molds,comprising rollers mounted on said frame and inclines on one of saidplates, said rollers adapted to engage and run on said inclines, andmeans for rotating said plates and molds.

:3. The combination with a supporting I frame having a vertical studshaft, of a plurality of mold carrying plates spaced apart and securedtogether, one of said plates being rotatably mounted on said verticalshaft, a plurality of molds mounted between said plates, means forreciprocating said plates and molds and means for rotating said platesand molds.

a. The combination with a supporting frame, of a plurality of moldcarrying plates secured together in spaced relation and rotatablymounted on said frame, a plurality of molds removably mountedtherebetween, means for reciprocating said plates and molds, and meansfor rotating said plates and molds.

5. The combination with a. supporting frame, having a vertical studshaft and also a. shaft supporting boss, a plurality of mold carryingplates secured in spaced relation, a plurality of molds mountedtherebetween, one of said plates rotatably mounted on said verticalshaft, means for reciprocating said Copies of this patent may beobtained for five cents cacn, by addressing the plates and molds, ashaft having a pinion secured thereto mounted in said boss, said piniondriving said plates.

6. The combination with a supporting frame, comprising a central platehaving a vertical stud shaft and a plurality of plates disposed aboutsaid central plate, and rollers mounted on said last mentioned plates,of a plurality of mold carrying plates mounted for rotation on said studshaft, a plurality of molds mounted between said mold carrying plates,inclines having abrupt terminal shoulders formed on one of said plates,and means to rotate said plates, said rollers being adapted to run onsaid inclines.

'7. The combination with a supporting frame, said frame comprising acentral frame having a vertical stud shaft and a plurality of platesdisposed about said central plate, rollers mounted on said lastmentioned plates, a shaft journaled in one of said last mentionedplates, a pinion secured to said last mentioned shaft, a plurality ofmold carrying plates mounted for rotation on said stud shaft, aplurality of molds mounted between said mold carrying plates, andinclines having abrupt terminal shoulders on. one of said plates adaptedto ride on said rollers.

In testimony whereof I aflix my signature, in presence of two witnesses.

DOLIVER M. DEAN.

Htnesses J. E. LAUB, L. H. ALLEN.

Commissioner of Patents,

Washington, D. 0.

